Why? You are comparing ships, which have passengers whose goal is to get somewhere (not necessarily be on a ship) and don’t self-identify as final-frontier risk

Why? You are comparing ships, which have passengers whose goal is to get somewhere (not necessarily be on a ship) and don’t self-identify as final-frontier risk takers with subs which are the exact opposite. Nobody takes a sub as regular or holiday transport. The point of the (non-military) sub is to go where almost nobody goes, where only a sub can go. And you don’t leave the sub.